The Constitution Committee of the House of Lords is currently conducting an inquiry into the impact of devolution on the UK, what binds the constituent parts together and how the Union might be strengthened and reinforced.

A year on from the independence referendum, David Bell considers what's happened since, particularly in terms of the economy and economic powers. He also considers where Scotland would be now had the vote gone the other way.

The Scotland Bill contains many new powers for the Scottish Government but those relating to welfare have been the focus of particular interest. Much has been said about how they might be changed or improved to develop a distinctively Scottish approach to social security.